Can't disable autostore on CY14B108N? | Cypress Semiconductor
Can't disable autostore on CY14B108N?
I am having difficulty sending software controlled autostore disable. I think I am interpreting the datasheet reads incorrectly. Is there a more detailed document regarding the software commands?
The data sheet states that sequential reads of 0x4e38, 0xb1c7, 0x83e0, 0x7c1f, 0x703f, 0x8b45. The CY14B108N has 19 address pins while there are only 16 pins defined with these hex address.
I have assumed that A18,A17,A16 are set to zero and not used.
A15 - A0 <-address bits used
0100 1110 0011 1000 <- binary first read
4 E 3 8 <- First read
(A15 = 0, A14=1, A13=0, A12=0) = 4xh
(A11=1, A10=1, A9=1, A8=0) = Exh
This should be straight forward, but I notce there is small print in datasheet under truth table that states.....
6. While there are 20 address lines on the CY14B108L (19 address lines on the CY14B108N), only the 13 address lines (A14–A2) are used to control software modes.
Rest of the address lines are don’t care.
Again, there are 16 bits defined in the hex value but now with this statement only 12 bits matter?
Can someone please explain this?
I have attached waveform of the 6 reads, does this look correct?